chara = new char[32];对应的释放内存的语句，哪种写法最好（）
A. delete a;
B. a = nullptr;
C. B．delete a;
D. C．delete [] a;
E. D．delete [] a;
F. a = nullptr;
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For the statement: inta[10],b; the correct description is[ ]（）
A. a can only be lvalue, but b can be rvalue
B. a can only be rvalue, but b can be lvalue
C. both a and b can only be lvalue
D. both a and b can only be rvalue
If compiled with a STANDARD C COMPILER （e.g. gcc）, which is correct about the following function “add”？ [ ]double add（int , int , int k） {
return （double） （8+k）;
}
int main（）{
int x=1, y=2If compiled with a STANDARD C COMPILER （e.g. gcc）, which is correct about the following function “add”？ [ ]double add（int , int , int k） {
return （double） （8+k）;
}
int main（）{
int x=1, y=2
A. Compile error. After filling in the name of the formal parameters, the program can be compiled without errors;
B. Compile error. After changing “int k” to “double k”, the program can be compiled without errors;
Compile error. After changing ” return （double） （8+k）;” to “return 8+k”, the program can be compiled without errors;
D. Compile success
本课程讨论区不建议问下列哪些问题（）
A. cout.flush（）函数的参数是什么
B. 如何安装Visual Studio 2019
C. 谁能帮我编一段排序算法的代码
D. 我的main（）函数如下int main（）{ char x { ‘\0’ }; std::cin ＞＞ x; std::cout cin.get（）; return 0;}我编译运行，并且输入了字符a之后，屏幕没有显示输出结果。我尝试了几次，都是同样的情况。我的开发环境是Windows 10上面的Visual Studio 2017
The correct description about the following program is[ ]#include
int pPointer;
int nNumber;
void f（）{
nNumber = 25;
pPointer = &nNumber;
}
int main（）{
f（）;
printf（“ValuThe correct description about the following program is[ ]#include
int pPointer;
int nNumber;
void f（）{
nNumber = 25;
pPointer = &nNumber;
}
int main（）{
f（）;
printf（“Valu
A. the types of pointers do not match
B. there are memory leaks
C. there is “hanging-up” pointer
D. no problem
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